Answer:
[1] 8
[2] 10
[3] 8.5
[4] 8
Step-by-step explanation:
[1] What is the mode of the data set?
5,8,8,8,8,9,9,9,10,10
Answer = 8
Explanation: Mode = Appears Most
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[2] How many people were in the sample?
Answer = 10
Explanation:
Each x = 1 person
Hence, it a total of 10 "x" (10 People)
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[3] What is the median of the data set?
5,8,8,8,8,9,9,9,10,10
Answer = 8.5
Explanation:
Median = Middle
5,8,8,8,8,9,9,9,10,10
5,8,8,8,8,9,9,9,10,10
8 + 9 = 17/2 = 8.5
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[4] What is the mean for the data set, to the nearest whole number?
Answer = 8
Explanation:
Mean = Add up all data values to get the sum and Count the number of values in your data set. Divide the sum by the count
5 + 8 + 8 +8 + 8 + 9 + 9 + 9 + 10 + 10 = 84/10=8.4
8.4 Round = 8
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<u><em>~Lenvy</em></u>
Answer:
21.0%
Step-by-step explanation:
Answer:
The correct option is D.
Step-by-step explanation:
The given equation is
According to the addition property of equality 
and 
are equivalent equations.
Use addition property of equality, add 3x on both the sides.
Therefore Sam's work is incorrect because he make calculation mistake.
According to the subtraction property of equality and 
are equivalent equations.
Use subtraction property of equality, subtract 5x from both the sides.
Therefore Roy's work is correct because he used subtraction property.
Option D is correct.
25 metres tall.
Explanation:
The heights of the trees are directly proportional to the length of their shadows because at the same time of day, the sun will be at the same angle in the sky.
The trees and their shadows form 2 similar triangles:
Write as a proportion:
<span><span>heightshadow</span> <span>x20</span>=<span>1512</span></span>
<span>12x=20×15</span>
<span>x=<span><span>20×15</span>12</span></span>
<span>x=25</span> metres tall.
As check: find the constant for each tree:
<span><span>1512</span>=1.25 and <span>2520</span>=<span>1.25</span></span>
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<span><span>i hope this help</span></span>
<span><span>
</span></span>
Answer:
I believe the answer is D. I can guarentee you that C is incorrect at least
